Lighting apparatus.



E. A. HAWTHORNE. LIGHTING APPARATUS. APPLLGATION ITLED JAN. 27, 1913.

" 1,074.7 1 6. Patented Oct; 7, 1913.

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ELLSWORTI-I A. HAWTHORNE, OF: BBIDGEPORT, CONNECTICUTV LIGHTING ,A PPARAT US.

Specification of: Letters Patent.

Application filed January-22,1913. Serial Na 744,349..

To all whom it mag concern:

Be it lmowmthat I, ELLSW'ORTH A.LHAW- 'rnonnn, a citizen of the United States, and a resident of Bridgeport, county of Fair.- field, State of Connecticut, (whose ostolfice address is 35 Spruce street, Bridge- 7 port, Connecticut,) have invented an Im provement in Lighting Apparatus, of whicl'i,

taken in connection with the accompanying illustration of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claim. In the drawings: Figure 1 is a plan view of a lighting apparatus embodying one form of my invention; Fig. 2 is an end elevation thereof; Fig. 3 shows the same apparatus in sectional elevation on the line3-3 in Fig. 1; and Fig. 4 is a sectional detail in plan taken on the line k t in Fig. 3.

Referring to the drawings, I have there illustrated one form of the invention embodied. in an electric lamp intended to be used as a tail light, more articularly for a .bicycle or motor-cycle, an to display a rear red light. As illustrated, such apparatus comprises a generally barrel-shaped shell or caslng l adapted to receive a standard dry cell of cylindrical shape. The casing is embraced and supported by the band 3 clamped to the arm 4, which latter is adjustably secured to the bracket 5. The bracket may be fastened to any appropriate part of a bicycle or motorcycle frame, as for example to the saddle post, so that the lamp will be supported at the rear of and just below the saddle. At its rear side the lamp casing 1 is, provided with a lamp holder consisting of the shell 6 fixedly secured to the casing 1 and cont ining the reflector 7 and threaded lamp socket 8, the latter adapted to receive the threaded base of the miniature incandescent lamp 9. The 'front of the lamp holder is provided with a lens or glass front 10, herein in the form of a red jewel light so that the light from the lamp 9 is reflected through the red glass 'lhe glass front is- Patented-Oct. 7,1913.

held: in any annular ring 11.: securedf to the 1 beaded or. curved flanged portion 12,. the latter'havingi in its-rearward face. a pairof slot-s13 whichare; of a suitablesize. to slip over the pins 1 projecting radially from the holder'd. This provides means-whereby the. glass can be readily applied to a. lamp holder by slipping-it over the; pins-'14 and giving ita: quarter turn.- Thisalso provides means whereby it may be readily" removed and replaced by a plain, uncolored glass front so that,.when it is desired to use it as an exploring: light, the lamp may. be removedfrom the saddle post and the colored lens quickly replaced. by theplain one.

4 Connection 1s had to the lamp from one pole ofsthe battery through the contact piece 15, the casing 1 and socket 91 From the other pole 16 of the battery, connection is had to the lamp base through a spring contact member 17. The latter consists at a metallic spring clip held in suitable relaclasping member'l8 is held fixed to the interior of the casing by any suitable means. The upper end of the contactclip 17 is slotted -to receive the tongue 20 of the hinged contact member 21, the lat ter being adapted to overlie thebattery terminal 16 and being pressed thercagainst at will by means of the screw- 22 carried by the casing cover 23, The hinged contact member 21 carries the insulation strip to insulate the same from the screw 22. To withdraw the contact member 21 from the battery terminal when the screw is retracted, the lip 20 is bent over and down about the end of the contact strip 17 so that when the screw is retracted it tends to'lift the contact member 21 free from the battery pole 16. The screw 22 is provided with a thumb piece 25 and is carried by the'threaded button 26 secured to the cover 23. The latter is slotted at27 (Fig. 2) to engage with the pins 28 so that it can be applied to and withdrawn from the casing in the same manner as the lens holder.

The hinged construction describcdis a very advantageous one since the contact member 21 may be readily rocked to and from its horizontal position with aminimum wear on the parts in making and breaking the circuit and in the insertion and removal of battery cells. When in its hori zontal position the fiat\back of the lip 20 is pressed by the resilient contact'm'ember 17 against the flat intervening insulation fiber 19 and thereby continuously andififiiectively tends to lift the contact member 21 out of engagement with the battery pole 16.

Through the use of a resilient cont-act piece 17 the lamp when screwed into its soc... is brought against a resilient seat, thereby being prevented from unscrewing throrgh he vibration or shaking of the amp.

The described form of lighting apparatus provides a very small, compact lamp' suitable for use as a rear bicycle light, while at 1e same time it is easily converted into an exploring light, as previously described.

liVhile I have herein shown and described for purposes of illustration one specific form of the invention, it is to be understood that the same is not limited to the constructional details shown, but that extensive deviations resilient contact member against which the lamp is adapted to seat when in said socket, said contact member being slotted, a second contact member having an end passing through said slot and bent over and about said first contact member, providing thereby a hinged connection thereto having provision tending to lift said second contact memher from a terminal of the battery, and means for, applying said second contact member to said battery terminal.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ELLSWORTH A. HAWTHORNE.

Witnesses:

DUDLEY M. Monnis, E. HoRAcE HAWTHORNE.

i opt-es oi this pate t may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. .7 

